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3B(2)H(6) + 6NH(5) rarr 3Xoverset("heat"...

`3B_(2)H_(6) + 6NH_(5) rarr 3Xoverset("heat")rarr2Y + 12H_(2)`. In the anionic part of the intermediate X the covalency of the central atom is _.

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NARAYNA-13TH GROUP ELEMENTS-Integer Type Question
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